Answer:

Loss of Appetite

1. Fatigue

2. Bacteria and Viruses

3. Your appetite may also tend to decrease when you’re sad, depressed, grieving, or anxious. Boredom and stress have also been linked to a decreased appetite.

Explanation:

1. Which adversely affects the body mass, weight and overall metabolism as well.

2. Loss of appetite can be caused by bacterial, viral, fungal, or other infections at any location.

  Here are some of what it could result from:

- an upper respiratory infection

- pneumonia

- gastroenteritis

- colitis

- a skin infection

- meningitis

3. Eating disorders, such as anorexia nervosa, can also lead to a decreased appetite overall. A person with anorexia nervosa undergoes self-starvation or other methods to lose weight.

People who have this condition are typically underweight and have a fear of gaining weight. Anorexia nervosa can also cause malnutrition.